-- P-E-N.A. What’s this?B. Spell “pen” please.C. What color is it?D. What’s your name

问题补充：

-- -- P-E-N.

A. What’s this?

B. Spell “pen”, please.

C. What color is it?

D. What’s your name?

答案：

A. What’s this?

(答案→)B. Spell “pen”, please.

C. What color is it?

D. What’s your name?

解析：What’s this?这是什么；Spell “pen”, please.请拼写一下“pen”；What color is it?它是什么颜色；What’s your name?你叫什么名字？根据下文“P-E-N.”，可知上文是要求拼写一下“pen”这个单词，故选B。